Results 231 to 240 of about 1,539,014 (284)
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Snowmobile Engine Noise and Hearing
Archives of Otolaryngology - Head and Neck Surgery, 1972Temporary threshold shifts (TTSs) were measured in 17 subjects (12 drivers and five riders) following 120 minutes of snowmobile noise exposure. All subjects were found to exhibit marked TTS at frequencies above 1,000 hertz. Predictably, the greatest amount of TTS occurred at 4,000 Hz.
F H, Bess, R E, Poynor
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2003
4th ed. ; • Ch. 1. Fundamentals and basic terminology • Ch. 2. The human ear • Ch. 3. Instrumentation for noise measurement and analysis • Ch. 4. Criteria • Ch. 5. Sound sources and outdoor sound propagation • Ch. 6. Sound power, its use and measurement • Ch. 7. Sound in enclosed spaces • Ch. 8. Partitions, enclosures and barriers • Ch. 9.
Bies, D., Hansen, C.
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4th ed. ; • Ch. 1. Fundamentals and basic terminology • Ch. 2. The human ear • Ch. 3. Instrumentation for noise measurement and analysis • Ch. 4. Criteria • Ch. 5. Sound sources and outdoor sound propagation • Ch. 6. Sound power, its use and measurement • Ch. 7. Sound in enclosed spaces • Ch. 8. Partitions, enclosures and barriers • Ch. 9.
Bies, D., Hansen, C.
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The Journal of the Royal Aeronautical Society, 1954
The title of this paper could cover a number of interesting problems ranging from the ultrasonic scream from compressors and its (alleged) effect in producing “jet sickness,” to the noise from supersonic propellers but, since it is “in particular Jet Noise” which is under discussion, this paper deals entirely with that subject.
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The title of this paper could cover a number of interesting problems ranging from the ultrasonic scream from compressors and its (alleged) effect in producing “jet sickness,” to the noise from supersonic propellers but, since it is “in particular Jet Noise” which is under discussion, this paper deals entirely with that subject.
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Learning with noise in engineering domains
1996This paper presents a learning approach which identifies and eliminates noisy examples (outliers) to improve the quality of training on engineering data and the effectiveness of the learned concept descriptions. In this approach, one (1) acquires initial concept descriptions from preclassified attributional training data, (2) optimizes concept ...
Jerzy W. Bala +2 more
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The Journal of the Acoustical Society of America, 1992
A noise reducer for an engine induction system comprises an outer duct having an inlet and outlet, and an inner duct having an inlet and outlet. The inner duct has a contained portion including the inner duct outlet and a portion of the inner duct adjacent to the inner duct outlet.
Alan R. Lockwood +2 more
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A noise reducer for an engine induction system comprises an outer duct having an inlet and outlet, and an inner duct having an inlet and outlet. The inner duct has a contained portion including the inner duct outlet and a portion of the inner duct adjacent to the inner duct outlet.
Alan R. Lockwood +2 more
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Noise measurements for engineering purposes
Electrical Engineering, 1935The 2 principles of noise measurement, namely, the subjective and objective principles, are discussed in this paper with special reference to electrical plant. Two forms of measurement embodying the subjective principle are considered: One is the proposed primary standard method, which is essentially a laboratory method; the other is the noise ...
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Engineering Control of Furnace Noise
American Industrial Hygiene Association Journal, 1969Abstract Sound pressure levels around furnaces may be hazardous to hearing, interfere with communications, and annoy occupants in adjoining areas. Burners are the most important but not the sole source of noise. Burner premix and combustion noise are described, and methods of noise control for existing installations are illustrated.
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The Journal of the Royal Aeronautical Society, 1954
During the past few years, the introduction of the large jet air liner has introduced new noises into the sky which has caused the public to be more aware than ever of the increasing nuisance value of aircraft taking off, landing, or on the ground. Much of this is being blamed unfairly on the jet air liner but the problem in any case remains with us ...
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During the past few years, the introduction of the large jet air liner has introduced new noises into the sky which has caused the public to be more aware than ever of the increasing nuisance value of aircraft taking off, landing, or on the ground. Much of this is being blamed unfairly on the jet air liner but the problem in any case remains with us ...
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Teaching Digital Noise and Noise Margin Issues in Engineering Education
IEEE Transactions on Education, 2005This work presents digital noise in signal integrity and clarifies noise margin issues in digital electronics education. For the static noise margin, the traditional definition violates the basic principle of noise. The embedded rectangle method to define the static noise margin is a more reliable criterion.
Yuan, Jiann S., Yang, Li
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Effect of Engine Structure on Noise of Diesel Engines
Proceedings of the Institution of Mechanical Engineers: Automobile Division, 1964The objectionable noise of a diesel engine or ‘diesel knock’ is produced by the abrupt rise of cylinder pressure resulting from initial inflammation of the injected fuel. Worth-while reductions of this noise have been achieved by the control of the fuel injection characteristics producing a smoother pressure rise, but these are limited by performance ...
T. Priede, A. E. W. Austen, E. C. Grover
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